ui: Cleanup class/struct forward declarations

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index 1115f80527d5811b2a518473947ab65682847fd5..069f57dfcf379965038604939fe59511559b28f6 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -108,6 +108,7 @@
 #include "content/renderer/internal_document_state_data.h"
 #include "content/renderer/manifest/manifest_manager.h"
 #include "content/renderer/media/audio_device_factory.h"
+#include "content/renderer/media/media_devices_listener_impl.h"
 #include "content/renderer/media/media_permission_dispatcher.h"
 #include "content/renderer/media/media_stream_dispatcher.h"
 #include "content/renderer/media/media_stream_renderer_factory_impl.h"
@@ -5049,6 +5050,13 @@ void RenderFrameImpl::OnFailedNavigation(
     return;
   }
 
+  // On load failure, a frame can ask its owner to render fallback content.
+  // When that happens, don't load an error page.
+  if (frame_->maybeRenderFallbackContent(error)) {
+    browser_side_navigation_pending_ = false;
+    return;
+  }
+
   // Make sure errors are not shown in view source mode.
   frame_->enableViewSourceMode(false);
 
@@ -5964,6 +5972,8 @@ void RenderFrameImpl::InitializeUserMediaClient() {
   web_user_media_client_ = new UserMediaClientImpl(
       this, RenderThreadImpl::current()->GetPeerConnectionDependencyFactory(),
       base::MakeUnique<MediaStreamDispatcher>(this));
+  GetInterfaceRegistry()->AddInterface(
+      base::Bind(&MediaDevicesListenerImpl::Create, GetRoutingID()));
 #endif
 }